'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

// 将路径片断使用\链接起来造成路径，并规范化生成的路径
function resolve(dir) {
  return path.join(__dirname, dir)
}
const name = defaultSettings.title || '监管系统' // page title
const port = process.env.port || process.env.npm_config_port || 8080 // dev port
// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  publicPath: '/', // 部署应用包时的基本 URL
  outputDir: 'dist', // 输出文件目录
  assetsDir: 'static', // 输出的静态文件目录
  lintOnSave: process.env.NODE_ENV === 'development', // eslint-loader 是否在保存的时候检查
  productionSourceMap: false, // 生产环境是否生成 sourceMap 文件
  devServer: {
    port: port,
    open: false, // 自动打开浏览器
    overlay: {
      warnings: false,
      errors: true
    },
    proxy: {
      // change xxx-api/login => mock/login
      // detail: https://cli.vuejs.org/config/#devserver-proxy
      // changeOrigin: true, 本地就会虚拟一个服务器接收你的请求并代你发送该请求,
      [process.env.VUE_APP_BASE_API]: {
        target: `http://` + process.env.VUE_APP_IP_PORT,
        changeOrigin: true,
        pathRewrite: {
          ['^' + process.env.VUE_APP_BASE_API]: ''
        }
      },
      // WebSocket
      [process.env.VUE_APP_SOCKET_API]: {
        target: `ws://` + process.env.VUE_APP_IP_PORT,
        changeOrigin: true,
        ws: true,
        pathRewrite: {
          ['^' + process.env.VUE_APP_SOCKET_API]: ''
        }
      }
    }
    // after: require('./mock/mock-server.js')
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  chainWebpack(config) {
    config.plugins.delete('preload') // TODO: need test
    config.plugins.delete('prefetch') // TODO: need test
    config.entry.app = ['babel-polyfill', './src/main.js']
    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()
    // set preserveWhitespace
    config.module
      .rule('vue')
      .use('vue-loader')
      .loader('vue-loader')
      .tap(options => {
        options.compilerOptions.preserveWhitespace = true
        return options
      })
      .end()
    config
      // https://webpack.js.org/configuration/devtool/#development
      // @Author:zhaoxueting20191216chrome浏览器调试时显示原始文件#source-map/cheap-module-eval-source-map
      .when(process.env.NODE_ENV === 'development',
        config => config.devtool('source-map')
      )
    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html')
            .use('script-ext-html-webpack-plugin', [{
            // `runtime` must same as runtimeChunk name. default is `runtime`
              inline: /runtime\..*\.js$/
            }])
            .end()
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial' // only package third parties that are initially dependent
                },
                elementUI: {
                  name: 'chunk-elementUI', // split elementUI into a single package
                  priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components'), // can customize your rules
                  minChunks: 3, //  minimum common number
                  priority: 5,
                  reuseExistingChunk: true
                }
              }
            })
          // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
          config.optimization.runtimeChunk('single')
        }
      )
  }
}
